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本研究是在以色列北部、中部和南部四个金帅苹果园中进行。四月份用钻对树干钻洞,将含有锌一膨润土(ZnB)或锌膨润土加乙二胺四乙酸锌(ZnBEA)的粘土片植入钻好的洞内。每厘米干周施入15毫克锌的到九月中旬为至,处理树锌的含量高于对照ZnBEA的制剂对于提高叶片浓度明显的高于ZnB
The study was conducted in four golden apple orchards in northern, central and southern Israel. Drilling a hole in the trunk with a drill in April implanted a well-drilled hole with a clay sheet containing zinc-bentonite (ZnB) or zinc bentonite plus zinc ethylene diamine tetraacetate (ZnBEA). Applying 15 mg of zinc per cm of dry week to mid-September led to significantly higher concentrations of tree zinc than the control ZnBEA formulations for increasing leaf concentration significantly above ZnB